Fig. 3
From: Veining and post-nappe transtensional faulting in the SW Helvetic Alps (Switzerland)
a Boudinaged vein parallel to bedding and (top right) detail of sheared vein. Gemmi region (613492/138570). b Sheared en-echelon vein sets along ductile–brittle shear zones. Gemmi region (613477/138537). c Sheared veins within a fault zone. Gemmi region (609449/138760). d SSE-dipping calcite-quartz veins crosscutting SW-dipping syntaxial quartz-calcite veins. Rezlisee, 2250 m (604043/138657). e Counter-clockwise (CCW) rotation of dip direction of veins, from WSW for set (2) to SSE for set (3). Since there are only two sets in this outcrop, their relative numbering has been changed in accord with regional observations. The progressive nature of this rotation can be seen from the tips of vein set (3). Crans Montana, 1470 m. (605557/130697) f Crosscutting vein relationships in a calcareous level of the Globigerina Marls Fm. Arrows indicate stretching directions, numbers the order of stretching, indicating a CCW rotation. Rawilpass, 2405 m. (601759/134774). g Poles to veins (extensional fractures) from the whole study area. Note that some of the SW-striking veins are possibly of Cretaceous age. h Calcite fibre direction in the veins from the whole study area